McKinley's doctors believed he would recover, and the President convalesced for more than a week in Buffalo at the home of the exposition's director. On the morning of September 12, he felt strong enough to receive his first food orally since the shooting—toast and a small cup of coffee. However, by afternoon he began to experience discomfort and his condition rapidly worsened. McKinley began to go into shock. At 2:15 a.m. on September 14, 1901, eight days after he was shot, he died from gangrene surrounding his wounds. He was 58. His last words were "It is God's way; His will be done, not ours." He was originally buried in West Lawn Cemetery in Canton, Ohio, in the receiving vault. His remains were later reinterred in the McKinley Memorial, also in Canton.
Czolgosz was tried and found guilty of murder, and was executed by electric chair at Auburn Prison on October 29, 1901.